RAID Вопрос насчёт UUID

Вот инфа по райдам:

root@wowubuntu:~# mdadm -D /dev/md0
/dev/md0:
Version : 00.90
Creation Time : Fri May 29 10:49:26 2009
Raid Level : raid1
Array Size : 152344256 (145.29 GiB 156.00 GB)
Used Dev Size : 152344256 (145.29 GiB 156.00 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent

Update Time : Mon Jun 8 16:30:01 2009
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0

UUID : 94ad6d11:06f9c3d2:396d76a5:31746e75
Events : 0.57960

Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 17 1 active sync /dev/sdb1
root@wowubuntu:~# mdadm -D /dev/md1
/dev/md1:
Version : 00.90
Creation Time : Mon Jun 8 15:40:55 2009
Raid Level : raid1
Array Size : 8490240 (8.10 GiB 8.69 GB)
Used Dev Size : 8490240 (8.10 GiB 8.69 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 1
Persistence : Superblock is persistent

Update Time : Mon Jun 8 16:22:42 2009
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0

UUID : 860fcab0:d3a6e242:baaca18a:8d23f5ef (local to host wowubuntu)
Events : 0.4

Number Major Minor RaidDevice State
0 8 5 0 active sync /dev/sda5
1 8 21 1 active sync /dev/sdb5
root@wowubuntu:~#

Почему у md1 в UUID пишется (local to host wowubuntu) ?